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E:\Working\Focus_Learning\Math_Genius_4_(25-10-2023)\Open_Files\Chap-02
\\December 7, 2023 3:54 PM Bharat Arora P-6 Reader _________________________ Date: ___________________74

ProPerties of subtraCtion

Just like addition, subtraction has some properties too.

1. If we subtract zero from any number, the answer is the number itself.
example: 54,897 – 0 = 54,897 and 6,58,125 – 0 = 6,58,125

2. When we subtract 1 from a number, we get the predecessor of that number.
example: 34,512 – 1 = 34,511 and 3,84,251 – 1 = 3,84,250
3. When we subtract a number from itself, the answer is zero.

example: 23,200 – 23,200 = 0 and 9,99,999 – 9,99,999 = 0

exPloring subtraCtion

We can subtract a number from another one in different ways. Let’s see some of them.

example: 258 – 143 = ?
Method 1 Method 2
By splitting only the smaller number using By splitting both the numbers using the
the place values place values

258 – 143 = ? 258 – 143 = ?

100 40 3
Step 1: 258 – 100 = 158 200 50 8 100 40 3
Step 2: 158 – 40 = 118 Step 1: 200 – 100 = 100
Step 3: 118 – 3 = 115 Step 2: 50 – 40 = 10

Also, we can have: Step 3: 8 – 3 = 5
–3 –10 –10 –10 –10 –100 Step 4: 100 + 10 + 5 = 115

115 118 128 138 148 158 258 So, 258 – 143 = 115
So, 258 – 143 = 115

Practice time 2e

1. Fill in the blanks.

(a) 43189 – 0 = _________ (b) 77782 – 1 = _________

(c) 54135 – 54135 = _________ (d) _________ – 0 = 64871

(e) 578521 – ________ = 578421 (f) 46340 – ____ = 46340

(g) ____ – 0 = 53956 (h) 158950 – ____ = 0

(i) 299100 – 299100 = ____

2. Solve the following subtractions in different ways.
(a) 5846 – 304 (b) 4592 – 1321 (c) 5859 – 1208 (d) 3648 – 1326

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